lake extending across the N Alberta-Saskatchewan, Canada, border
: 3,100 sq mi (8,029 sq km)
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Athabasca'Cree dial. ahthapaskaaw, name of lake, lit., there are reeds here and there < ahthap-, net(like) + -ask-, vegetation + formative suffixes